• 음성과학
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• 제14권3호
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• pp.7-19
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• 2007

The present study investigated some phonetic attributes which distinguish two Korean stop types $^-aspirated$ and $lax^-$ in a prosodic position which has previously received little attention, namely medial in an accentual phrase. The intonational pattern across syllables which are initial in an accentual phrase (Jun, 1993) is said to depend on the type of stop (aspirated or lax), while that of syllables which are medial in an accentual phrase are not. In Experiment 1, nine native Korean speakers read sentences with a controlled prosodic pattern in which aspirated or lax stops occurred in accentual phrase-medial position. Acoustic analysis revealed significant differences between aspirated and lax stops in closure duration, voice-onset time, and fundamental frequency (F0) values for post-stop vowels. The results indicate that a wider range of acoustic cues distinguish aspirated and lax Korean stops than previously demonstrated. Phonetic and phonological models of consonant-tone interactions for Korean will need to be revised to account for these results.

• 대한한방내과학회지
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• 제37권2호
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• pp.397-405
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• 2016

Objectives: This case study reports on the effectiveness of traditional Korean medicine in treating Parkinson’s disease.Method: A patient with Parkinson’s disease was treated with herbal medicine, acupuncture, and pharmacopuncture. The improvement in Parkinson’s disease symptoms was measured using self-evaluation of the change in symptoms.Results: The use of traditional Korean medicine treatments appeared to show improvement in Parkinson’s disease symptoms.Conclusion: The results of this case study suggest that traditional Korean medicine may be a possible treatment option for Parkinson’s disease.

• International Journal of Advanced Culture Technology
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• 제7권2호
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• pp.218-226
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• 2019

In modern society, people live in an environment with artificial or natural noise. Especially, the sound that corresponds to the artificial noise makes the noise itself and affects each other because many people live and work in the city. Sounds are generated by the activities and causes of various people, such as construction sites, aircraft, production machinery, or road traffic. These sounds are essential elements in human life and are recognized and judged by human auditory organs. Noise is a sound that you do not want to hear by subjective evaluation, and it is a loud sound that gives hearing damage or a sound that causes physical and mental harm. In this study, we introduce the method of stimulating the human hearing by finger vibration and explain the advantages of the proposed method in various kinds of a noise environment. And how to improve the sound quality to improve efficiency. In this paper, we propose a method to prevent the loss of hearing loss and the transmission of sound information based on proper signal to noise ratio when using portable IT equipment in various noise environments.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.311-312
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• 2021

성대 질환과 관련한 측정 기술은 기술 축적이 늦은 상태이며, 전기성문전도(electroglotograph : EGG) 측정 장비는 외산에 의존적이다. 본 논문에서는 발성에 있어서 중요한 성대의 진동 상태, 즉 성대의 접촉양상을 간편하게 측정하여 모니터링할 수 있는 착용형 무선 전기성문전도 측정 단말기를 설계하고자 하였다.

• 음성과학
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• 제8권2호
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• pp.23-37
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• 2001

The primary sound produced by the vibration of vocal folds reaches the velopharyngeal isthmus and is directed both nasally and orally. The proportions of the each component is determined by the anatomical and functional status of the soft palate. The oral sounds composed of oral vowels and consonants according to the status of vocal tract, tongue, palate and lips. The nasal sounds composed of nasal consonants and nasal vowels, and further modified according to the status of the nasal airway, so anatomical abnormalities in the nasal cavity will influence nasal sound. The measurement of nasal sounds of speech has relied on the subjective scoring by listeners. The nasal sounds are described with nasality and nasalization. Generally, nasality has been assessed perceptually in the effect of maxillofacial procedures for cleft palate, sleep apnea, snoring and nasal disorders. The nasalization is considered as an acoustic phenomenon. Snoring and sleep apnea is a typical disorders due to abundant velopharynx. The sleep apnea has been known as a cessation of breathing for at least 10 seconds during sleep. Several medical and surgical methods for treating sleep apnea have been attempted. The uvulopalatopharyngoplasty(UPPP) involves removal of 1.0 to 3.0 cm of soft palate tissue with removal of redundant oropharyngeal mucosa and lateral tissue from the anterior and sometimes posterior faucial pillars. This procedure results in a shortened soft palate and a possible risk following this surgery may be velopharyngeal malfunctioning due to the shortened palate. Few researchers have systematically studied the effects of this surgery as it relates to speech production. Some changes in the voice quality such as resonance (nasality), articulation, and phonation have been reported. In view of the conflicting reports discussed, there remains some uncertainty about the speech status in patients following the snoring and sleep apnea surgery. The study was conducted in two phases: 1) acoustic analysis of oral and nasal sounds, and 2) evaluation of nasality.

• 대한후두음성언어의학회지
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• 제2권1호
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• pp.15-19
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• 1986

Our report refers to occidental vocal techniques from Greece until today. It is remarkable that even with poor anatomy knowledge, there were advices on styles given from very early periods, for both church and secular singing. During the 18th century, the names of "vox pectoris", "vox guturris" and "vox capitis" appear, nominations that somehow remain nowadays with great confusion about source of sound production and results of resonance. Vocal occidental styles developed different kinds of requirements from the singers, that had to adapt their vocal Possibilities to them. The same happened with "pop" song. Nowadays, all kinds of singers must have a conscious knowledge of its voice management to prevent vocal disturbances. We consider that the technique is the same, even when the singer has to sing Wagner, Debussy, Sconberg, Piazzola or Gershwin. The big changes occured at resonance levels, and because these different use of the vocal resonators the effects are quite different. In summary, the big differences on classical the effects are quite different. In summary, the big differences on classical and pop song are done on the different use of the resonators and its effects on the vocal tract. "Pop" singers, men and women, should be taught to use both registers, "modal" and "falsetto" to be able to reach the complete range of their songs without any harm to their larynxes. In our opinion, a good singing technique means that it could be adapted to every stylistic need. The same technique is adapted to the popular singer as well. The main difference lays on the use of resonators, pretty strong in the classic singer, weaken in the popular singer, on the volume and on the total extension of the voice. Breathing control, effortless emission and the use of "passage" at the right point should be taught to all singers, regardless of their style. (omitted)

• 말소리와 음성과학
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• 제9권3호
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• pp.25-32
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• 2017

Besides their effect on the f0 contour of the following vowel, Korean stops are undergoing a sound change in which a partial or complete consonantal merger on voice onset time (VOT) is taking place between aspirated and lax stops. Many previous studies on sound change have mainly focused on group-normative effects, that is, effects that are representative of the population as a whole. Few systematic quantitative studies of change in adult individuals have been carried out. The current study examines whether the sound change holds for individual speakers. It focuses on inter-speaker and intra-speaker variability on sound change in contemporary Korean. Speech data were collected for thirteen Seoul Korean speakers studying abroad in America. In order to minimize the possible effects of speech production, socio-phonetic factors such as age, gender, dialect, speech rate, and L2 exposure period were controlled when recruiting participants. The results showed that, for nine out of thirteen speakers, the consonantal merger is taking place between the aspirated and lax stop in terms of VOT. There were also intra-speaker variations on the merger in three aspects: First, is the consonantal (VOT) merger between the two stops is in progress or not? Second, are VOTs for aspirated stops getting shorter or not (i.e., the aspirated-shortening process)? Third, are VOTs for lax stops getting longer or not (i.e., the lax-lengthening process)? The results of remarkable inter-speaker and intra-speaker variability indicate a synchronous speech sound change of the stop system in contemporary Korean. Some speakers are early adopters or active propagators of sound change whereas others are not. Further study is necessary to see whether the inter-speaker differences exceed intra-speaker differences in sound change.

• 정보화정책
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• 제26권4호
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• pp.85-106
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• 2019

최근 전자민원시스템에 집단민원을 제기하는 사례가 늘어나고 있으나 이에 대한 효율적인 관리시스템이 아직 마련되어 있지 않아 행정 업무량 증대와 사회적 갈등 양산 등의 부작용이 우려되고 있다. 이에 본 연구에서는 이상탐지와 코퍼스 언어학 기반의 내용분석을 활용한 전자 집단민원 추정 방법론을 제시하고자 하였다. 이를 위하여 1)집단민원의 개념에 대한 이론적 고찰과 2) 비모수적 비지도 학습에 기반 한 이상탐지를 활용한 전자 집단민원 추정과 3) n-gram 코사인 각도 거리를 활용한 민원의 내용 유사도 분석방법론을 제안하고 4) 창원시 시민의 소리에 대한 사례분석을 통하여 제시한 방법론의 유용성과 정책적 시사점, 향후 과제를 검토하였다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 추계학술대회
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• pp.1059-1062
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• 2009

컴퓨터에 의한 음악의 처리가 점차 발전함에 따라 음악의 자동 입력에 관한 연구의 관심이 증가하고 있다. 이에 따라 컴퓨터에 음악을 입력하는 여러 가지 연구가 이루어지고 있다. 그러나, 이전의 연구들은 전문가만이 할 수 있다는 단점이 있다. 즉, 기존 악보 제작 프로그램은 초보자가 사용하려면 사전 지식이 필요하다. 이를 해결하기 위하여 본 논문에서는 비전문가가 음성으로 만들어낸 음을 추출한 후, 음원의 주파수 대역폭을 이용하여 자동으로 악보를 그리는 시스템을 제안한다. 이 시스템은 비전문가가 작곡을 할 수 있도록 편리성을 제공한다. 또한, 컴퓨터에 의해 처리된 악보를 다양한 악기로 연주하는 기능을 제공한다. 이를 통하여 비전문가도 음성과 간단한 시스템 조작에 의해 작곡을 할 수 있고, 원하는 악기로 연주되는 음악을 만들 수 있다.

• 대한후두음성언어의학회지
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• 제31권2호
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• pp.66-70
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• 2020

Background and Objectives Presbyphonia is characterized by hoarse, breathy, weak vocal intensity. Extracellular matrix (ECM) in lamina propria (LP) of the vocal folds play an important role in voice production, and change of ECM according to the aging leads to the presbyphonia. The aim of this study was to investigate the histologic analysis of aging vocal fold of rat. Materials and Method Six and twenty two months old Sprague-Dawley rats (n=8, each group) were used and classified into young (six months old rats) and old (twenty two months old rats) group. Histologic analysis and immunohistochemical staining for ECM of LP were performed. Results Overall cellular density was significantly decreased in old rat group. Elastin fibers of LP were significantly decreased in old rat group. Type I collagen was significantly increased in old rat group. Type III collagen did not show significant difference. Hyaluronic acids did not show significant difference in Alcian blue staining and immunohistochemical staining. Conclusion Decreased general cellular density and elastin fiber and increased type I collagen were observed in the LP of vocal folds of aging rats. These ECM changes might to contribute the aging voice.